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Persistent bash history > Load into current history

After setting up a persistent bash history, I looked for ways to use it efficiently. I wrote a function that loads the persistent history into the current terminal history, so it can be used immediately.

Here is the code, which you need to add to your ~/.bashrc file:

    tail -100 ~/.persistent_history | grep -oP '(?&lt;=\| ).+' &gt;&gt; ~/.bash_history.tmp
    history -r ~/.bash_history.tmp
    rm ~/.bash_history.tmp

So, what exactly happens here?
First of all, reload the .bashrc script by typing source ~/.bashrc.
As you can see, the last 100 lines in the .persistent_history file are written to a temporary file. Then this file is loaded into the current history and deleted again. Whenever you type load_persistent_history into the bash, this code gets executed and the last 100 commands are accessible in your current terminal session.

Crazy hack, but damn useful!

Published inTips and Tricks

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